Imagine if we lived in a world where constant sunshine, flowing rivers, steady wind, abundant forests, and hot rock beneath our feet were equally accessible resources able to instantly power our around-the-clock energy demands. Alas, we do not live in a perfect world, and sometimes the sun doesn't shine and the wind doesn't blow.
Understanding the limitations of individual renewable sources, European leaders years ago set in motion a plan to solve climate issues and create the most ideal renewable scenario possible.
Eventually, they hope the European super grid project will connect local renewable resources to all corners of Europe with interconnecting transmission, cutting waste, boosting economies and helping everyone to share the wealth.
Great as this allows the sharing of sometimes intermittent renewable across a wider area - the wind is always blowing somewhere !
Long and interesting article here - http://www.renewableenergyworld.com/rea/news/article/2012/08/the-deal-european-supergrid-sets-high-expectations